Rotary fan



(No Model.)

ROTARY FAN.

No. 450,148. Patented Apr. 14, 1891.

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ROTARY FAN SPECIFICATION forming part of Letters Patent No. 450,148,dated April 14, 1891.

Application filed May 10, 1890. Serial No. 351,273- (No model.)

To all whom, it may concern:

Be it known that I, RICHARD GODEFFROY, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, a citizen of the United States,have invented certain new and useful Improvements in Rotary Fans, ofwhich the following is a specification.

This invention relates to certain improvements on the rotary fan forwhich Letters Patent No. 395,620 were granted to me on January 1, 1889,said improvements being designed with a view to simplify theconstruction, so that the same is better adapted to the purpose forwhich it is designed.

In the accompanying d rawin gs,Figure1 represents a side elevation of myimproved rotary fan. Fig. 2 is a vertical central section of thefan-hub, tubular fan-shaft, interior guide-tube, and winding-rod drawnon a larger scale. Fig. 3 is aside elevation, partly in section, of thetransmitting-train of gearwheels by which rotary motion is imparted tothe fan-shaft, also drawn on alarger scale; and Fig. 4 is a plan of Fig.3 with the top plate of the casing removed.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents a fan, the hub A of which isapplied to a hollow shaft A that is provided at its upper end with acollar a, which rests on anti-friction rollers a, located in anannularly-grooved bearing a attached to the bottom of the easing B. Thecasing B incloses a train of gearwheels 0, by which motion istransmitted from a prime motor to the fan-shaft A The casing B issuspended bya top ring?) from a hook I), that is attached to one of thebeams of the ceiling or to any other suitable support. In holes of thetop plate of the casing B are guided three rods b the rounded-off headsof which are pressed against the ceiling by means of spiral springs thatare interposed bet-ween the top plate and the heads, as shown in Fig. 1,so as to keep the entire fan mechanism in vertical position and preventit from swinging while the fan is in motion. The train of gear-wheels Ois driven by a weight E, which is suspended on wire or other cords e,that run over pulleys c, said cords being wound up on a drum E byturning a rod or spindle E, which passes down and through a fixedguide-tube A at the interior of the hollow fan-shaft A to the outside ofthe same. The upper end of the Windingrod E is provided with a boss 20.The lower end of the winding-rod E is provided with a handle h, by whichthe rod E is turned on its axis, the motion of the rod E beingtransmitted to the drum E by means of a pinion e at the upper end of therod E and a cog-wheel a that is attached to the axle of the windingdrumE. The upper cylindrical part E of the winding-drum E incloses apawl-andratchet mechanism (not shown in the drawings) which permits theturning of the drum E and the winding up of the suspension-cords. e onthe same independently of the transmitting-train of gear-wheels C, butwhich imparts the movement of the drum to said train of gear-wheels whenthe driving-weight sinks, so as to turn the drum in a direction oppositeto the direction of its motion when winding up the same. The lower endof the fan-shaft A is supported by a flanged circumferential collarcl'on a ring-bracket cl, attached to the lower end of the interiorguide-tube A The friction between the fan-shaft A and collar cl is takenup by anti-friction rollers d which move in an annular top groove of theringbracket (1, as shown in Fig. 2. The guidetube A passes upward intothe casing B and is secured at its upper end to a fixed sleeve 0 whichis attached by ribs (3*, having legs to the bottom plate of the casingB. The top and bottom plates of the casing B are provided With therequired number of journal-bearings for the shafts of the differentgearwheels of the train of gear-wheels O, by which rotary motion isimparted to the fan-shaft A The transmitting-train of gear-wheels isshown in Figs. 3 and 4, and consists of a gearwheel a at the upper endof the drum E, a pinion e meshing therewith, a gear-wheel e on thespindle of the pinion a a pinion e meshing with a gear-wheel c, agear-wheel e on the spindle of the gear-wheele a pinion e", meshing withthe gear-wheel a a gear-wheel e on the spindle of the pinion e", apinion e meshing with the gear-wheel e a gear-wheel e on the spindle ofthe pinion e and meshing with a pinion 6 and a gear-wheel e at the lowerend of the spindle of the pinion e which gear-wheel meshes with a pinione at the upper end of the tubular fan-shaft A. The drum E and thegear-wheel e, the gear-wheel e connected with the pinion e, and thegearwheel 6 connected with the pinion e turn loosely on their respectivespindles, while the gear-whee'lsc and 6 6, e 6 and e are fixed to theirrespective spindles. The pin-ion e is attached to the collar a at theupper end of the fan-shaft A In rooms with low ceilings, where theweight would not have sufficient fall to allow the fan to run anyconvenient length of time, the

Weight E and cords e, as well as the pulleys a, may be omitted, and inplace of the same the drum E be operated by a spiral spring arranged atthe interior of the same in the same manner as in the well-knownspringdriven clock-trains.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. The combination of a casing, a motor therein, awinding-drum driven by said motor, a fixed sleeve within said casing,provided at its upper end with a bearing and at its lower end with legsattached to the bottom plate of said casing, an exterior bearing securedto said bottom plate opposite said fixed sleeve, a

tubular fan-shaft provided at its upper, end with a collar supported bysaid exterior hearing, a fan attached to said fan-shaft, a train ofgearing between said drum and fan-shaft, a fixed guide-tube within saidfan-shaft, extended upward beyond said shaft into said fixed sleeve andattached thereto, a windingrod extending through said fixed tube andthrough said fixed sleeve and provided at its upper end with a bosswhich engages the bearing of said fixed sleeve, gearing between theWinding-rod and drum, and a handle at the lower end of said winding-rodfor actuating it, substantially as described.

2. The combination, with a fixed suspensionhook, of the snpporting-casin g of a rotary fan, said casing having a suspension eye or ringand spring-actuated steadying-rods having enlarged heads or knobs,substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing Witnesses.

RICHARD GODEFFROY.

Witnesses:

JOHN M. NOBRE, HENRY TALTER TUCKER.

